more math ig Flashcards
1
Q
arithmetic sequence formula
A
an = a1 + (n-1) d
2
Q
geometric sequence formula
A
an = (a1)r^(n-1)
3
Q
sum of the geometric sequence formula
A
a1 (1-r^n) all over (1-r)
4
Q
sum of the arithmetic sequence formula if given the difference
A
n/2 [2a1 + (n-1) d]
5
Q
sum of the arithmetic sequence formula if given the nth term of the sequence
A
(a1 + an all over 2) n
6
Q
EXPLAIN COMBI PERMI!!!!
A
